Each has a variety of reasons for being winless. Injuries are a factor for many teams, while others have just not lived up to expectations.

Regardless of reasoning, all four of the teams are looking to pick up that elusive first win as soon as possible. Each will have their own set of challenges in upcoming weeks that will make it very tough to do so.

Here is a look at which 0-4 team has the best chance of winning in upcoming weeks.

4. St. Louis Rams

The odds are against the Rams being the first winless team to throw a one into the left column of their record.

They are on bye heading in to Week 5 which clearly sets them behind the two teams that are playing. From there they go on to play the best team in football Week 6 in the Green Bay Packers.

Anything can happen in an NFL game, but the Packers have shown that they may be the most balanced team in football over the first four weeks.

Even after Week 6 the Rams face another tough test in the Dallas Cowboys. "America's Team" has been inconsistent so far this year, but they have a high powered offense that the Rams defense won't be able to keep up with.

The Rams were my favorites to win the NFC West at the beginning of the season, but looking ahead now they may be on their way to being winless for the first half of 2011.

3. Miami Dolphins

The Miami Dolphins have the same handicap as the Rams being on bye this weekend.

The Dolphins came close in Week 3, losing by only one to the Browns. However, they have struggled severely against top teams like the Patriots and Chargers. They just don't have the offense to keep up.

Now with quarterback Chad Henne out for the season, Miami will have to turn to career back-up Matt Moore.

Even looking ahead, Miami's road is tough.

They face a tough Jets defense Week 6 that will give just about any offense in the NFL problems. This means a long night for the Dolphins.

Then they will be playing the Denver Broncos who will be coming off of their bye week well rested and potentially with Tim Tebow under center at quarterback.

Dolphins fans should start getting comfortable at the bottom of the AFC East.

2. Minnesota Vikings

The Minnesota Vikings pull in at number two on this short list. The Vikings will actually play this weekend against the Cardinals.

This is likely their most winnable game over the next three weeks of NFL football. Week 6 they have to head to Chicago to take on a very tough Bears defense.

The Bears quarterback Jay Cutler has struggled so far this year, but if the Chicago defense can contain Adrian Peterson, it will be a tough game for the Vikings to pull off.

Then Week 7, the Vikings take on Aaron Rodgers and the defending Super Bowl champions. While this game is at home, I don't see any upset in the making.

Minnesota could easily have a much better record than they do if the ball bounced their way a few extra times in each game. The biggest deficit they have lost by this year was seven and that was Week 1 against the Chargers.

The Vikings are a better team than their record shows, but they still fall in as the second most likely winless team to win first.

1. Indianapolis Colts

The Peyton Manning-less Colts are the most likely team to shed the title of "winless" first.

While their play in some of the games thus far this season has been downright awful, they appeared to show some signs of life against a good Tampa Bay team on Monday Night Football last week.

Curtis Painter took over officially as the starting quarterback and was able to find Pierre Garcon for two highlight reel touchdowns. However, Josh Freeman and the Buccaneers proved to eventually be too much.

The Colts have the easiest schedule of the four teams by far.

They take on a bad Chiefs team that could easily still be winless if they hadn't played the Vikings Week 4. I believe that the Colts will pick up their first win this weekend at home against Kansas City.

If they don't, they will get another shot Week 6 taking on the lowly Bengals. Rookie quarterback Andy Dalton gave the city of Cincinnati some flashes of hope by leading the Bengals on a comeback victory against the Buffalo Bills in Week 4.

However, I don't believe that this is a turnaround moment for them.

I wouldn't be surprised to see the Colts sitting at 2-4 heading into Week 7 against the Saints, where I believe Drew Brees will tear them apart.

Nevertheless, it makes the Indianapolis Colts the most likely 0-4 team to win first this season.